Convert Megabits to Kilobytes (Mbit to kB)
1 megabit (Mbit) = 125 kilobytes (kB). 1 kB = 0.008 Mbit. Example: 15 Mbit = 15 × 125 = 1875 kB.
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1 Mbit = 125 kB
Type in either box. Scientific notation works: 1.5e-3.
Converting a list? Use the bulk megabit to kilobyte converter to paste a column from Excel.
How to Convert Megabit to Kilobyte
- 1 Mbit = 125 kB
- 1 kB = 0.008 Mbit
- Example: convert 15 Mbit to kB: 15 Mbit = 15 × 125 kB = 1875 kB
Formula
kB = Mbit × 125
Derivation from SI units:
- 1 Mbit = 10⁶ bits.
- 1 kB = 1000 bytes = 8000 bits (decimal, SI).
- 1 Mbit = 1000000 bit ÷ 8000 bit per kB = 125 kB
Both units are defined exactly, so the factor is exact. Megabit definition: megabit; Kilobyte definition: kilobyte.
Worked examples
- A reading of 16 Mbit converts to 2000 kB.
16 Mbit × 125 = 2000 kB - A value of 128 Mbit is 16000 kB.
128 Mbit × 125 = 16000 kB
Megabit to Kilobyte conversion table
| Megabits (Mbit) | Kilobytes (kB) |
|---|---|
| 1 Mbit | 125 kB |
| 2 Mbit | 250 kB |
| 4 Mbit | 500 kB |
| 8 Mbit | 1000 kB |
| 16 Mbit | 2000 kB |
| 32 Mbit | 4000 kB |
| 64 Mbit | 8000 kB |
| 100 Mbit | 12500 kB |
| 128 Mbit | 16000 kB |
| 256 Mbit | 32000 kB |
| 500 Mbit | 62500 kB |
| 1000 Mbit | 125000 kB |
Where it's used
Megabits are used for network and broadband quantities, while kilobytes appear in small files, emails and web pages. Both measure amount of digital information, so the conversion is a fixed factor.
Megabit to other data storage units
| Conversion | 1 Mbit equals |
|---|---|
| megabit to kilobyte | 125 kB |
| megabit to byte | 125000 B |
| megabit to megabyte | 0.125 MB |
| megabit to gigabyte | 0.000125 GB |
| megabit to terabyte | 1.25 × 10⁻⁷ TB |
| megabit to bit | 1000000 bit |
| megabit to kibibyte | 122.0703125 KiB |
| megabit to mebibyte | 0.1192092896 MiB |
Show 5 more units
| megabit to gibibyte | 0.0001164153218 GiB |
|---|---|
| megabit to kilobit | 1000 kbit |
| megabit to gigabit | 0.001 Gbit |
| megabit to petabyte | 1.25 × 10⁻¹⁰ PB |
| megabit to tebibyte | 1.136868377 × 10⁻⁷ TiB |
Frequently asked questions
How many kilobytes are in 1 megabit?
1 Mbit = 125 kB.
How do I convert megabits to kilobytes?
Multiply the value in Mbit by 125. For example, 15 Mbit × 125 = 1875 kB.
Is the Mbit to kB conversion exact?
Yes. Both units are defined exactly, and 1 Mbit is exactly 125 kB.
Sources
- The International System of Units (SI), 9th edition (SI Brochure), Bureau International des Poids et Mesures , Table 7 (SI prefixes); hertz, Table 4.
Last reviewed: . Factors are stored exactly and computed with 50-digit decimal arithmetic. See how we verify conversion factors.
Cite this page
APA
Scientific Converters. (2026, October 15). Convert Megabits to Kilobytes (Mbit to kB). Retrieved October 25, 2026, from https://scientificconverters.com/data-storage/megabits-to-kilobytes/
IEEE
Scientific Converters, "Convert Megabits to Kilobytes (Mbit to kB)," scientificconverters.com. Accessed: Oct. 25, 2026. [Online]. Available: https://scientificconverters.com/data-storage/megabits-to-kilobytes/